# How to create sphere-shaped segment?

**URL:** <https://discourse.slicer.org/t/how-to-create-sphere-shaped-segment/26968>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [December 29, 2022, 2:11am UTC](https://discourse.slicer.org/t/how-to-create-sphere-shaped-segment/26968 "2022-12-29T02:11:44Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![akmal871026](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/akmal871026/32/11642_2.png) [@akmal871026](https://discourse.slicer.org/u/akmal871026)\
**Post date:** [December 29, 2022, 2:11am UTC](https://discourse.slicer.org/t/how-to-create-sphere-shaped-segment/26968/1 "2022-12-29T02:11:45Z")

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Dear Sir,

I want to create an ROI sphere in my image so that I can get the counts in ROI created.

This means that I can adjustable the sphere volume due to radius or something else.

Does any extension have it?

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**Author:** ![jamesobutler](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jamesobutler/32/7511_2.png) [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Post date:** [December 29, 2022, 4:47am UTC](https://discourse.slicer.org/t/how-to-create-sphere-shaped-segment/26968/2 "2022-12-29T04:47:48Z")

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The “Paint” Segment Editor effect has a sphere mode where you can set the size of the sphere. Then you can get the statistics of this sphere using the Segment Statistics module.

[https://slicer.readthedocs.io/en/latest/user\_guide/modules/segmenteditor.html#paint](https://slicer.readthedocs.io/en/latest/user_guide/modules/segmenteditor.html#paint)

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**Author:** ![akmal871026](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/akmal871026/32/11642_2.png) [@akmal871026](https://discourse.slicer.org/u/akmal871026)\
**Post date:** [December 30, 2022, 4:14pm UTC](https://discourse.slicer.org/t/how-to-create-sphere-shaped-segment/26968/3 "2022-12-30T16:14:01Z")

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But, the diameter is in %. I don’t know the value in mm of the diameter.

What I want is can set the diameter of the sphere to 37mm and so on.

 ![WhatsApp Image 2022-12-31 at 12.10.44 AM](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/0/d/0ded5c2a9518a2ca1bf8eca2bf2d67df06f7b9c4.jpeg)

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**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [December 30, 2022, 7:17pm UTC](https://discourse.slicer.org/t/how-to-create-sphere-shaped-segment/26968/4 "2022-12-30T19:17:52Z")

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> [@akmal871026](#):
>
> the diameter is in %.

Click the % button on the right to switch to mm.

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<div class="post-metadata">

**Author:** ![akmal871026](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/akmal871026/32/11642_2.png) [@akmal871026](https://discourse.slicer.org/u/akmal871026)\
**Post date:** [December 31, 2022, 12:09pm UTC](https://discourse.slicer.org/t/how-to-create-sphere-shaped-segment/26968/5 "2022-12-31T12:09:16Z")

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Thank you very much for your reply